<?php
namespace app\login\business;
use app\BaseController;
use Firebase\JWT\ExpiredException;
use Firebase\JWT\JWT as JWTUtil;
class jwt extends BaseController
{
    /**
     * 根据json web token设置的规则生成token
     * @return \think\response\Json
     */
    public static function createjwt()
    {
        $key = md5('dd'); //jwt的签发密钥，验证token的时候需要用到
        $time = time(); //签发时间
        $expire = $time + 14400; //过期时间
        $token = array(
            "user_id" => 1,
            "iss" => "http://www.najingquan.com/",//签发组织
            "aud" => "zz", //签发作者
            "iat" => $time,
            "nbf" => $time,
            "exp" => $expire
        );
        $jwt = JWTUtil::encode($token,$key);
        return $jwt;
    }

    /**
     * 验证token
     * @return \think\response\Json
     */
    public static function verifyjwt()
    {
        $jwt= input("jwt");
        $key = md5('dd'); //jwt的签发密钥，验证token的时候需要用到
        try{
            $jwtAuth = json_encode(JWTUtil::decode($jwt,$key,array("HS256")));
            $authInfo = json_decode($jwtAuth,true);
            if (!$authInfo['user_id']){
                return "用户不存在";
            }
            return "ok";
        }catch (ExpiredException $e){
            return "token过期";
        }catch (\Exception $e){
            return $e->getMessage();
        }

    }
}
